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One of the factors of x³ - 27 is x - 3. What is the other factor?

User Sherman
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1 Answer

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12 votes

Answer:

We know that, a³ - b³ = (a - b)(a² + ab + b²)

Now,

  • x³ - 27
  • (x)³ - (3)³
  • (x - 3)(x² + 3x + 9)

Therefore,

  • (x² + 3x + 9) is the other factor.
User Jort
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